Wow.... this is not balanced at all. Whoever though defense was a good card, let alone worth of an artifact (that you can't refuse). Really didn't understand what they were doing. And anything that adds cards to the opponent's deck? Not worth taking. There's even a card that costs 3 mana, deals 2 damage, and adds 2 curses to their deck. How is that helpful? If you're doing a good job, you'll be dealing damage to them and destroying their deck. Ergo - when will they ever draw those curses? Card could cost 0, and it still wouldn't be usable.